28885135 has 8 divisors (see below), whose sum is σ = 34692336. Its totient is φ = 23088000.

The previous prime is 28885133. The next prime is 28885141. The reversal of 28885135 is 53158882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28885135 - 2¹ = 28885133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7260 + ... + 10510.

It is an arithmetic number, because the mean of its divisors is an integer number (4336542).

It is a vampire number, since it can be written as 3251 ⋅ 8885 (with its own digits).

Almost surely, 2^28885135 is an apocalyptic number.

28885135 is a deficient number, since it is larger than the sum of its proper divisors (5807201).

28885135 is a wasteful number, since it uses less digits than its factorization.

28885135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033.

The product of its digits is 76800, while the sum is 40.

The square root of 28885135 is about 5374.4892780617. The cubic root of 28885135 is about 306.8255117275.

The spelling of 28885135 in words is "twenty-eight million, eight hundred eighty-five thousand, one hundred thirty-five".